Shutter.



M. KLAIBER.

SHUTTER.

APPLICATION FILED MAR.24,1909.

Patented Jan. 25, 1910.

the followin with the win UNITED STATES PATENT OFFICE.

MAXIMILIAN KLAIBER, OF NEW YORK, N. Y., ASSIGNOR TO AMERICAN BIOSCOPECOMPANY, OF BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

SHUTTER.

To all whom it may concern:

Be it known that I, MAXIMILIAN KLAI ER, a citizen of the United States,and a resident of the city of New York, borough of Brooklyn, county ofKings, and State of New York, have invented certain new and useful Imrovements in Shutters, of which is a specification. My invention relatesto photographic shutters and to that class used on dissolving projectinglanterns where the lenses of the lantern are alternately or successivelycovered and uncovered for the purpose of projecting pictures on ascreen.

One of the objects of my invention is to produce a shutter that may beput in operative condition or set by the person who changes the lanternslides, and the shutter itself operated by the lecturer so that thepictures may be thrown upon the screen at the will of the lecturer, theshutter being so constructed that it cannot be operated until the slideis changed.

Another object is to produce a shutter that may be operated by the viewchanger should the apparatus used by the lecturer for operating theshutter get out of order.

Other objects will appear from the heroinafter description.

The invention is illustrated in the accompanying drawing forming part ofthis application, in which;

Figure 1 is a front view of the shutter. Fig. 2 is a view showing theconnection between the two pivoted plates of the shutter and the pin foroperating the same. Fig. 3 is a view showing the cushioning device bywhich the speed of the shutter is varied.

In the drawing the same reference character indicates the same part inthe several views.

The part lettered A is the front plate and B is the rear late of theshutter, separated from each other by the rim C, leaving a space Dbetween which the shutter plates swing. E and F are the openings inthese plates within which the projecting lenses, not shown, are located.

G is one of the shutter plates pivoted at This plate consists of twowings g, 9 1 is the other shutter late pivoted at h, having two wings72., ii; which cooperate g, to cover and uncover the openings and Eachof these plates Specification of Letters Patent.

Application filed March 24, 1909.

Patented J an. 25, 1910. Serial No. 485,390.

is provided with the recess or slot. 9 h, adjacent to their pivots.

Pivoted to the front plate A is a lever J, carrying a pin K whichprojects into the slots g, It, the plates A and B being provided withslots a, b, to ermit this.

Secured to the plate 1 is a pivoted pin L having an opening 1 thereinthrough which projects a spring rod M. One end of this spring rod isconnected to the lever J.

Secured to the plate B is an angle piece N having recesses or slots 91,n therein, and an opening or hole n".

O is an electroma net having a pivoted armature P. Secure to the uppersurface of this armature is a sto Q. This armature is normally held awayfrom the ma net by the spring R and S isa catch whic holds the armaturedown against the tension of the spring.

T is a 11511 rod passing through the openmg n o the angle piece n. Thelower end of this rod is supported by and passes through a bracket U,this end being directly over the armature.

V is a spriiig which normally holds the rod T out of, engagement withthe armature I.

Pivoted to the rear of the plate B is a lever \V, one end of which isprovided with a recess or slot w into which )rojects the pin K. To theother end of this lever is ivoted a piston rod X to which is connecte apiston which works in the cylinder Y, this cylnder being provided with aset screw Z.

The lever .l is so constructed that the free end thereof comes incontact with the stop Q when the armature I is in normal position.

In order to operate the shutter the upper end of the spring rod M ismoved into .one of the recesses n 01' n. As shown in Fig. 1 of thedrawin this spring rod is in the recess n, the said rod is undertension, the armature is in its raised position and the lower end of thelever J rests against the right end of the stop Q and this prevents thelever J from moving to the left under the tension of the spring. In thisposition the wings g 71. are in contact or overlap, covering the openingE. The other wings g h are separated leaving the lens opening Funcovered.

In this position the operator has placed the slide in position to beprojected on the screen,

is movedputnof thgm of the lever I the spring rod M thereupon throws thelever -seen t not shown, when the lens E is uncovered, the operatorhaving previously hooked the upper end of the spring rod M m the recessa.

electric button or moves a switch, not shown, which completes thecircuit, which circuit pulls down the armature P against the tension ofthe spring R, whereupon the stop Q J. and

to the leit. The pin K moving to the left with this lever moves theshutter plates G, H, on their pivots, which movement separates the twowings g, h. to uncover the opening E and the other wings 9 72?, move.together to close the opening F. The lever J having-moved to the leftand the lecturer having broken the circuit, the armature P is raised bythe spring R and the lever is to the leftof the stop Q. The operator-nowmoves the spring rod M from the recess a and hooks it in the recess n,having previously changed the left hand slide. The parts are now in suchposition as to move the lever J to the right when the lecturer" makesthe circuit, and this operation of the lever J will uncover the openingF and cover the o ening E. In'this construction it is hat the lecturercannot throw a picture on the screen until the operator has changed theslide and the position of the spring rod M. When the lecturer makes thecircuit there is a click at the armatureiwhiohiaets as a signal to warnthe operator that the 1 that the slide should be changed. Should themagnet fail to operate,the operator by .inmn'hmxwpnshing down on the rodU can move the armatufisothat'thedever J will be released to operate theshutter.

In some cases it may be desirable for the operator to move the shuttersby merely switching the upper end of the spring rod M from one notch tothe other. Vhen this is desired, the armature is held by the catch S sothat thestop Q, Will be out of the. way of the free end of the lever J.It may be well to note that the pin L is pivoted so that the spring rodM will have free play.

I have provided the apparatus shown in Fig. 3 so that I can regulate thespeed of the shutter. The iston moving in the cylinder Y acts as a cusion and by moving the screw Z I can vary the size of the openlng in thischamber so that the air behind the piston will pass out of the cylinderthrough the o ening more or less freel and theispeed oi the shuttervaried accor ing to the speed at which the air escapes.

It is to be understood that I do not intend to limit myself to the exactconstruction K lVhen'the lecturer is ready to throw the I "'"fioveredpicture on the screen he presses an shown, as various changes may bemade therein without departing from the spirit of my invention.

Having now described my invention, what I claim as hew and-desire tosecureby Letters Patent is:

1. In a shutter, 11 plate having an opening therein,means.for-alternately severin and uncovering said'opening, alevcrcotiperating with said means, a spring connected to said lever,said spring being adapted to be moved in one position to move the leverin one di rection and to anothcnpositiontogpove the lever in anotherdirection, astop in fllepatlr of said lever, and means for moving thestep out of the path of the lever.

In a shutter, a plate having openings therein, pivoted plates foralternately covering and uncovering said openings, a lever connected tosaid pivoted plates,'a pivoted spring rod connected to said lever, saidrod being adapted to be moved in one position to move the pivotedplates'in one direction, and to another position to move the plates inan opposite direction, an armature adjacent tothe free end of saidlever, a stop carried levernto prevent movement Kf the same, and anelectro-magnet for moving the stop out of the path of the lever.

3. In a shutter, a plate having openings therein, a pair of pivotedplates connected p i voted.. plates havingswings which cotiperate tocover and uncover said openings, said plates having recesses therein, alever pivoted to the first mentioned plate, said'plate having a slottherein, a pin carried by said lever and projecting through said slotand through the recesses in the pivoted plates, a spring rod pivoted tothe first mentioned plate, one end of said spring being. secured to thelever, an angle piece having notches therein adapted to hold theopposite end of the spring, an armature adjacent to the free end of thelever and having a sto' normally in the path of the lever, and an eectro-magnet adapted to move the pivoted armature to withdraw the stopfrom the path of the said lever upon the completion of'the circuit.

4. In a shutter, a plate having openings therein, a pair of pivotedplates connected to said first mentioned plate, each of said pivotedplates having wings which cooperate to cover and uncover said openings,said plates having recesses therein, a lever pivoted to the firstmentioned plate, said plate having a slot therein, a pin carried by saidlever and projecting through said slot and through the recesses in thepivoted plates, a spring rod pivoted to the first mentioned plate, oneend of said spring being secured to the lever, an angle piece havingnotches therein adapted to hold the opposite end of the spring, anarmature adjacent to the free by said armature normally in thgpathof theto said first mentioned plate, each of said 1 end of the lever andhaving a stop normally in the path of the lever, an electromagnetadaptet to move the pivoted armature to withdraw the stop from the pathof the said lever upon the completion of the circuit, and a push rodhaving one end extending over the armature.

5. In a shutter,a plate having openings therein, a pair of pivotedplates connected to said first mentioned plate, each of said pivotedplates having wings which cooperate to cover and uncover said openings,said plates having recesses therein, a lever pivoted to the firstmentioned plate, said plate having a slot therein, a pin carried by saidlever and projecting through said slot and through the recesses in thepivoted lates, a spring rod pivoted to the first mentioned plate, oneend of said spring being secured to the lever, an angle iece havinnotches therein adapted to hol the opposite end of the spring, anarmature adjacent to the free end of the lever and having a stopnormally in the path of the lever, an electro-magnet ada ted to move thepivoted armature to with raw the stop from the path of the said leverupon the completion of the circuit, and means connected to the pin onthe lever to vary the speed of the lever.

(i. In an apparatus of the class described, a shutter consisting of aplate having an opening therein adapted to fit over the end of theprojecting lens, means for alternately covering and uncovering saidopening, a lever cooperating with said means, a spring connected to saidlever, said spring being ada ted to be moved in one position to move theever in one direction, and to another position to move the lever in anopposite direction, a stop in the path of said lever, and means formoving the sto out of the path of the lever, said last mentioned meansoperating as a signal, as and for the purpose set forth.

In witness whereof I have hereunto set my hand at the city, county andState of New York, this 20th day of March, 1909.

MAXIMILIAN KLAIBER.

In presence of-- AGNES C. OCONNELL, IsABaL R. RICHARDS.

